异步电机转子时间常数的补偿方法

Method for Inductor Motor with Rotor Time Constant Compensation

在异步电机转差频率矢量控制系统中,通常采用固定的转子时间常数进行转差频率计算,由此存在电机参数不准确而造成磁场定位不准的问题。提出了一种转子时间常数的补偿方法,采用模型自适应法将电机转子参数对控制系统的影响降为最小。实验结果表明,与常规的转差频率矢量控制方法相比,该方法能更有效地控制电机电流,并对转子参数的变化具有很强的鲁棒性。

In the slip frequency vector control system for inductor motor, it has a problem that the rotor flux estimation is highly sensitive to the rotor resistance. A compensation method for rotor time constant was proposed, and the control system is insensitive to the rotor parameters by introducing a model reference adaptive method. The experimental result demonstrates that the proposed method achieves the correct estimation of the rotor flux with the robustness against the rotor parameters variation, also it has good performance for control motor current.